11993015 has 4 divisors (see below), whose sum is σ = 14391624. Its totient is φ = 9594408.

The previous prime is 11992993. The next prime is 11993039. The reversal of 11993015 is 51039911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51039911 = 13 ⋅3926147.

It is a cyclic number.

It is not a de Polignac number, because 11993015 - 2¹⁶ = 11927479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199297 + ... + 1199306.

It is an arithmetic number, because the mean of its divisors is an integer number (3597906).

Almost surely, 2^11993015 is an apocalyptic number.

11993015 is a deficient number, since it is larger than the sum of its proper divisors (2398609).

11993015 is an equidigital number, since it uses as much as digits as its factorization.

11993015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398608.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 11993015 is about 3463.0932704737. The cubic root of 11993015 is about 228.8984186168.

The spelling of 11993015 in words is "eleven million, nine hundred ninety-three thousand, fifteen".